./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:07,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:07,942 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:07,998 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:07,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:08,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:08,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:08,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:08,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:08,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:08,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:08,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:08,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:08,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:08,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:08,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:08,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:08,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:08,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:08,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:08,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:08,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:08,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:08,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:08,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:08,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:08,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:08,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:08,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:08,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:08,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:08,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:08,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:08,065 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:08,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:08,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:08,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:08,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:08,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:08,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:08,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:08,070 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-07 00:52:08,115 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:08,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:08,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:08,117 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:08,117 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:08,118 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:08,118 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:52:08,118 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:08,118 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:08,118 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:52:08,119 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:52:08,120 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:08,120 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:52:08,120 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:52:08,120 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:52:08,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:08,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:52:08,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:08,122 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:52:08,122 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:08,122 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:52:08,122 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:08,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:52:08,123 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:08,123 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:52:08,123 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:08,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:08,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:08,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:08,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:08,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:52:08,126 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:52:08,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:52:08,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:52:08,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:08,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:08,127 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-07 00:52:08,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:52:08,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:52:08,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:52:08,458 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:52:08,459 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:52:08,460 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:52:08,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/d4452bd69/2d7e82fe35044b78891bd84c8b5d927b/FLAG6ce2852af [2021-11-07 00:52:09,363 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:52:09,364 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:52:09,423 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/d4452bd69/2d7e82fe35044b78891bd84c8b5d927b/FLAG6ce2852af [2021-11-07 00:52:09,833 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/d4452bd69/2d7e82fe35044b78891bd84c8b5d927b [2021-11-07 00:52:09,836 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:52:09,837 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:52:09,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:09,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:52:09,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:52:09,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:09" (1/1) ... [2021-11-07 00:52:09,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c993da3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:09, skipping insertion in model container [2021-11-07 00:52:09,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:09" (1/1) ... [2021-11-07 00:52:09,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:52:09,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:11,631 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:52:12,248 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:52:12,254 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:52:12,495 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:52:12,502 WARN L563 CHandler]: More than one settings change for restart is not yet implemented; using only the first one to be reported [2021-11-07 00:52:12,636 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 00:52:12,694 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:12,750 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-07 00:52:12,751 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@528238b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:12, skipping insertion in model container [2021-11-07 00:52:12,751 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:12,752 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-07 00:52:12,754 INFO L168 Benchmark]: Toolchain (without parser) took 2915.40 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 76.6 MB in the beginning and 75.6 MB in the end (delta: 972.7 kB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:12,755 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 84.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:52:12,756 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2912.86 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 76.2 MB in the beginning and 75.6 MB in the end (delta: 562.8 kB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:52:12,758 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 107.0 MB. Free memory is still 84.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 2912.86 ms. Allocated memory was 107.0 MB in the beginning and 167.8 MB in the end (delta: 60.8 MB). Free memory was 76.2 MB in the beginning and 75.6 MB in the end (delta: 562.8 kB). Peak memory consumption was 58.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 5575]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:52:15,083 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:52:15,086 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:52:15,138 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:52:15,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:52:15,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:52:15,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:52:15,149 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:52:15,152 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:52:15,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:52:15,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:52:15,163 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:52:15,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:52:15,166 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:52:15,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:52:15,172 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:52:15,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:52:15,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:52:15,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:52:15,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:52:15,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:52:15,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:52:15,189 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:52:15,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:52:15,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:52:15,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:52:15,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:52:15,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:52:15,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:52:15,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:52:15,198 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:52:15,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:52:15,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:52:15,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:52:15,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:52:15,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:52:15,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:52:15,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:52:15,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:52:15,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:52:15,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:52:15,211 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-07 00:52:15,236 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:52:15,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:52:15,238 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:52:15,238 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:52:15,238 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:52:15,238 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:52:15,239 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:52:15,239 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:52:15,239 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:52:15,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:52:15,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:52:15,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:52:15,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:52:15,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:52:15,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:52:15,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:52:15,243 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:52:15,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:52:15,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:52:15,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:52:15,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:52:15,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:52:15,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:52:15,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:15,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:52:15,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:52:15,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:52:15,245 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:52:15,245 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:52:15,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:52:15,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:52:15,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:52:15,246 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7137d136237382d1d4fe8b796308ccd9bf4f8cbcaceb3edb5e802731e648c2dd [2021-11-07 00:52:15,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:52:15,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:52:15,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:52:15,660 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:52:15,661 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:52:15,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:52:15,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/4b199c80d/22660a9b3b474455a5d21f589ac5109d/FLAG0bdb6dac2 [2021-11-07 00:52:16,839 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:52:16,839 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:52:16,893 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/4b199c80d/22660a9b3b474455a5d21f589ac5109d/FLAG0bdb6dac2 [2021-11-07 00:52:17,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/data/4b199c80d/22660a9b3b474455a5d21f589ac5109d [2021-11-07 00:52:17,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:52:17,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:52:17,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:17,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:52:17,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:52:17,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:17" (1/1) ... [2021-11-07 00:52:17,187 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a20b16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:17, skipping insertion in model container [2021-11-07 00:52:17,187 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:17" (1/1) ... [2021-11-07 00:52:17,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:52:17,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:19,813 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 00:52:19,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:19,901 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 00:52:19,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:52:20,393 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 00:52:20,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:20,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:52:20,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i[298420,298433] [2021-11-07 00:52:20,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:52:21,312 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:52:21,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21 WrapperNode [2021-11-07 00:52:21,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:52:21,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:52:21,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:52:21,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:52:21,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:21,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:22,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:52:22,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:52:22,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:52:22,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:52:22,646 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:22,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:22,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:22,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:23,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:23,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:23,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:23,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:52:23,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:52:23,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:52:23,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:52:23,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (1/1) ... [2021-11-07 00:52:23,976 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:52:23,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:52:24,000 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:52:24,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:52:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 00:52:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:52:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-11-07 00:52:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-11-07 00:52:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:52:24,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:52:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 00:52:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-07 00:52:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 00:52:24,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-07 00:52:24,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-11-07 00:52:24,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-07 00:54:55,328 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:54:55,328 INFO L299 CfgBuilder]: Removed 8487 assume(true) statements. [2021-11-07 00:54:55,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:55 BoogieIcfgContainer [2021-11-07 00:54:55,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:54:55,339 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:54:55,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:54:55,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:54:55,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:17" (1/3) ... [2021-11-07 00:54:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e61dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:55, skipping insertion in model container [2021-11-07 00:54:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:21" (2/3) ... [2021-11-07 00:54:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72e61dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:54:55, skipping insertion in model container [2021-11-07 00:54:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:54:55" (3/3) ... [2021-11-07 00:54:55,346 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-468e4e3-1-204_8a-drivers--net--jme.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-11-07 00:54:55,352 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:54:55,352 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 00:54:55,446 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:54:55,452 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 00:54:55,452 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 00:54:55,540 INFO L276 IsEmpty]: Start isEmpty. Operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:55,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 00:54:55,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:55,552 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:55,553 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:54:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:55,558 INFO L85 PathProgramCache]: Analyzing trace with hash -623761508, now seen corresponding path program 1 times [2021-11-07 00:54:55,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:55,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1553544349] [2021-11-07 00:54:55,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:55,578 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:55,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:55,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:55,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:54:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:54:57,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:54:57,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:54:57,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:57,837 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:54:58,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:54:58,214 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:54:58,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1553544349] [2021-11-07 00:54:58,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1553544349] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:54:58,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:54:58,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:54:58,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708327967] [2021-11-07 00:54:58,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:54:58,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:54:58,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:54:58,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:58,251 INFO L87 Difference]: Start difference. First operand has 5110 states, 5103 states have (on average 1.231628453850676) internal successors, (6285), 5109 states have internal predecessors, (6285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:54:58,510 INFO L93 Difference]: Finished difference Result 10186 states and 12525 transitions. [2021-11-07 00:54:58,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:54:58,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 00:54:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:54:58,554 INFO L225 Difference]: With dead ends: 10186 [2021-11-07 00:54:58,554 INFO L226 Difference]: Without dead ends: 5056 [2021-11-07 00:54:58,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:54:58,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5056 states. [2021-11-07 00:54:58,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5056 to 5056. [2021-11-07 00:54:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5056 states, 5050 states have (on average 1.218019801980198) internal successors, (6151), 5055 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:58,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5056 states to 5056 states and 6151 transitions. [2021-11-07 00:54:58,786 INFO L78 Accepts]: Start accepts. Automaton has 5056 states and 6151 transitions. Word has length 69 [2021-11-07 00:54:58,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:54:58,786 INFO L470 AbstractCegarLoop]: Abstraction has 5056 states and 6151 transitions. [2021-11-07 00:54:58,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.5) internal successors, (69), 2 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:54:58,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5056 states and 6151 transitions. [2021-11-07 00:54:58,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 00:54:58,791 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:54:58,791 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:54:58,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:54:59,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:54:59,013 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:54:59,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:54:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -606369396, now seen corresponding path program 1 times [2021-11-07 00:54:59,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:54:59,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294274326] [2021-11-07 00:54:59,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:54:59,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:54:59,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:54:59,019 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:54:59,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:55:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:00,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 1272 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 00:55:00,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:01,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:01,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:01,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:55:01,636 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:01,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294274326] [2021-11-07 00:55:01,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294274326] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:01,637 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:55:01,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 00:55:01,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058851127] [2021-11-07 00:55:01,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:55:01,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:55:01,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:01,640 INFO L87 Difference]: Start difference. First operand 5056 states and 6151 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:02,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:02,198 INFO L93 Difference]: Finished difference Result 10079 states and 12279 transitions. [2021-11-07 00:55:02,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:55:02,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-07 00:55:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:02,229 INFO L225 Difference]: With dead ends: 10079 [2021-11-07 00:55:02,230 INFO L226 Difference]: Without dead ends: 5067 [2021-11-07 00:55:02,243 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 00:55:02,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5067 states. [2021-11-07 00:55:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5067 to 5067. [2021-11-07 00:55:02,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5067 states, 5061 states have (on average 1.2175459395376407) internal successors, (6162), 5066 states have internal predecessors, (6162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5067 states to 5067 states and 6162 transitions. [2021-11-07 00:55:02,399 INFO L78 Accepts]: Start accepts. Automaton has 5067 states and 6162 transitions. Word has length 69 [2021-11-07 00:55:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:02,400 INFO L470 AbstractCegarLoop]: Abstraction has 5067 states and 6162 transitions. [2021-11-07 00:55:02,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5067 states and 6162 transitions. [2021-11-07 00:55:02,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 00:55:02,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:02,408 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:02,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:02,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:02,638 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:55:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:02,639 INFO L85 PathProgramCache]: Analyzing trace with hash 175496076, now seen corresponding path program 1 times [2021-11-07 00:55:02,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:02,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1430817608] [2021-11-07 00:55:02,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:02,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:02,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:02,642 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:02,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:55:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:04,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:04,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:05,143 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:05,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:05,988 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:05,988 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:05,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1430817608] [2021-11-07 00:55:05,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1430817608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:05,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1391043756] [2021-11-07 00:55:05,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:05,989 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:05,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:05,991 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:05,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 00:55:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:07,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 1322 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:07,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:08,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:08,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:08,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1391043756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:08,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:55:08,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:55:08,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972273633] [2021-11-07 00:55:08,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:08,823 INFO L87 Difference]: Start difference. First operand 5067 states and 6162 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:09,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:09,200 INFO L93 Difference]: Finished difference Result 5067 states and 6162 transitions. [2021-11-07 00:55:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:09,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-07 00:55:09,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:09,232 INFO L225 Difference]: With dead ends: 5067 [2021-11-07 00:55:09,233 INFO L226 Difference]: Without dead ends: 5065 [2021-11-07 00:55:09,235 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5065 states. [2021-11-07 00:55:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5065 to 5065. [2021-11-07 00:55:09,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5065 states, 5060 states have (on average 1.2173913043478262) internal successors, (6160), 5064 states have internal predecessors, (6160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:09,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5065 states to 5065 states and 6160 transitions. [2021-11-07 00:55:09,465 INFO L78 Accepts]: Start accepts. Automaton has 5065 states and 6160 transitions. Word has length 79 [2021-11-07 00:55:09,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:09,468 INFO L470 AbstractCegarLoop]: Abstraction has 5065 states and 6160 transitions. [2021-11-07 00:55:09,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:09,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5065 states and 6160 transitions. [2021-11-07 00:55:09,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 00:55:09,471 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:09,471 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:09,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:09,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:09,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:09,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:55:09,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1145432161, now seen corresponding path program 1 times [2021-11-07 00:55:09,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:09,895 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1792781501] [2021-11-07 00:55:09,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:09,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:09,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:09,896 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:09,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 00:55:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:11,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:11,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:12,302 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:12,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:13,135 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:13,136 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:13,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1792781501] [2021-11-07 00:55:13,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1792781501] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:13,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [473489480] [2021-11-07 00:55:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:13,137 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:13,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:13,144 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:13,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2021-11-07 00:55:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:14,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 1323 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:14,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:15,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:15,973 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:15,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [473489480] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:15,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:55:15,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:55:15,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197400326] [2021-11-07 00:55:15,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:15,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:15,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:15,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:15,977 INFO L87 Difference]: Start difference. First operand 5065 states and 6160 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:16,733 INFO L93 Difference]: Finished difference Result 15037 states and 18317 transitions. [2021-11-07 00:55:16,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:16,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 00:55:16,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:16,795 INFO L225 Difference]: With dead ends: 15037 [2021-11-07 00:55:16,795 INFO L226 Difference]: Without dead ends: 10036 [2021-11-07 00:55:16,809 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:16,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10036 states. [2021-11-07 00:55:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10036 to 10036. [2021-11-07 00:55:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10036 states, 10031 states have (on average 1.2182235071279035) internal successors, (12220), 10035 states have internal predecessors, (12220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:17,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10036 states to 10036 states and 12220 transitions. [2021-11-07 00:55:17,284 INFO L78 Accepts]: Start accepts. Automaton has 10036 states and 12220 transitions. Word has length 80 [2021-11-07 00:55:17,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:17,284 INFO L470 AbstractCegarLoop]: Abstraction has 10036 states and 12220 transitions. [2021-11-07 00:55:17,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:17,285 INFO L276 IsEmpty]: Start isEmpty. Operand 10036 states and 12220 transitions. [2021-11-07 00:55:17,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-07 00:55:17,302 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:17,302 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:17,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:17,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:17,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:55:17,717 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:55:17,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2087735142, now seen corresponding path program 1 times [2021-11-07 00:55:17,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:17,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1547875075] [2021-11-07 00:55:17,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:17,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:17,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:17,722 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:17,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 00:55:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:20,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:20,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:21,441 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 00:55:21,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:22,902 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 00:55:22,902 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:22,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1547875075] [2021-11-07 00:55:22,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1547875075] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:22,903 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [87480092] [2021-11-07 00:55:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:22,903 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:22,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:22,904 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:22,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-07 00:55:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:24,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:24,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:25,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:26,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [87480092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:26,383 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:55:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:55:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326908044] [2021-11-07 00:55:26,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:26,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:26,386 INFO L87 Difference]: Start difference. First operand 10036 states and 12220 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:28,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:28,083 INFO L93 Difference]: Finished difference Result 26839 states and 32653 transitions. [2021-11-07 00:55:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:28,084 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 164 [2021-11-07 00:55:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:28,161 INFO L225 Difference]: With dead ends: 26839 [2021-11-07 00:55:28,162 INFO L226 Difference]: Without dead ends: 16871 [2021-11-07 00:55:28,185 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 645 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:28,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16871 states. [2021-11-07 00:55:29,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16871 to 16038. [2021-11-07 00:55:29,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16038 states, 16033 states have (on average 1.2196719266512817) internal successors, (19555), 16037 states have internal predecessors, (19555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16038 states to 16038 states and 19555 transitions. [2021-11-07 00:55:29,071 INFO L78 Accepts]: Start accepts. Automaton has 16038 states and 19555 transitions. Word has length 164 [2021-11-07 00:55:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:29,073 INFO L470 AbstractCegarLoop]: Abstraction has 16038 states and 19555 transitions. [2021-11-07 00:55:29,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 16038 states and 19555 transitions. [2021-11-07 00:55:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-11-07 00:55:29,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:29,086 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:29,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:29,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:29,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:29,502 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:55:29,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:29,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1628134576, now seen corresponding path program 1 times [2021-11-07 00:55:29,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:29,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [546531661] [2021-11-07 00:55:29,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:29,507 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:29,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:29,508 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:29,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 00:55:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:33,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:33,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:35,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:37,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-07 00:55:37,533 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:37,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [546531661] [2021-11-07 00:55:37,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [546531661] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:37,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [243046672] [2021-11-07 00:55:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:37,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:37,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:37,537 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:37,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-07 00:55:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 3267 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:39,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:41,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:41,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:43,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:55:43,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [243046672] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:55:43,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:55:43,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 9 [2021-11-07 00:55:43,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161328759] [2021-11-07 00:55:43,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 00:55:43,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:55:43,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 00:55:43,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:43,659 INFO L87 Difference]: Start difference. First operand 16038 states and 19555 transitions. Second operand has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:55:44,871 INFO L93 Difference]: Finished difference Result 38913 states and 47691 transitions. [2021-11-07 00:55:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 00:55:44,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 288 [2021-11-07 00:55:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:55:44,941 INFO L225 Difference]: With dead ends: 38913 [2021-11-07 00:55:44,941 INFO L226 Difference]: Without dead ends: 22943 [2021-11-07 00:55:44,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1148 GetRequests, 1141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-07 00:55:45,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22943 states. [2021-11-07 00:55:45,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22943 to 22934. [2021-11-07 00:55:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22934 states, 22929 states have (on average 1.229796327794496) internal successors, (28198), 22933 states have internal predecessors, (28198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:45,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22934 states to 22934 states and 28198 transitions. [2021-11-07 00:55:45,890 INFO L78 Accepts]: Start accepts. Automaton has 22934 states and 28198 transitions. Word has length 288 [2021-11-07 00:55:45,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:55:45,891 INFO L470 AbstractCegarLoop]: Abstraction has 22934 states and 28198 transitions. [2021-11-07 00:55:45,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.33333333333333) internal successors, (283), 3 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:55:45,891 INFO L276 IsEmpty]: Start isEmpty. Operand 22934 states and 28198 transitions. [2021-11-07 00:55:45,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2021-11-07 00:55:45,913 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:55:45,914 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:55:45,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:46,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-07 00:55:46,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:46,327 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:55:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:55:46,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1139647704, now seen corresponding path program 1 times [2021-11-07 00:55:46,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:55:46,331 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032989461] [2021-11-07 00:55:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:46,332 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:55:46,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:55:46,333 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:55:46,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 00:55:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:50,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 3533 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:55:50,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:55:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 00:55:52,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:55:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 00:55:55,078 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:55:55,078 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032989461] [2021-11-07 00:55:55,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032989461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:55:55,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1020236599] [2021-11-07 00:55:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:55:55,079 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:55:55,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:55:55,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:55:55,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2021-11-07 00:55:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:55:57,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 3533 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:55:57,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:56:00,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:02,539 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-07 00:56:02,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1020236599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:02,539 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 2 imperfect interpolant sequences. [2021-11-07 00:56:02,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5] total 10 [2021-11-07 00:56:02,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810530896] [2021-11-07 00:56:02,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:56:02,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:02,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:56:02,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:56:02,541 INFO L87 Difference]: Start difference. First operand 22934 states and 28198 transitions. Second operand has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:07,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:07,127 INFO L93 Difference]: Finished difference Result 59946 states and 74287 transitions. [2021-11-07 00:56:07,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:07,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 335 [2021-11-07 00:56:07,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:07,220 INFO L225 Difference]: With dead ends: 59946 [2021-11-07 00:56:07,220 INFO L226 Difference]: Without dead ends: 37080 [2021-11-07 00:56:07,261 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 1336 GetRequests, 1328 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:56:07,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37080 states. [2021-11-07 00:56:08,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37080 to 37062. [2021-11-07 00:56:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37062 states, 37057 states have (on average 1.2427341662843727) internal successors, (46052), 37061 states have internal predecessors, (46052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37062 states to 37062 states and 46052 transitions. [2021-11-07 00:56:09,096 INFO L78 Accepts]: Start accepts. Automaton has 37062 states and 46052 transitions. Word has length 335 [2021-11-07 00:56:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:09,097 INFO L470 AbstractCegarLoop]: Abstraction has 37062 states and 46052 transitions. [2021-11-07 00:56:09,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 92.75) internal successors, (371), 4 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 37062 states and 46052 transitions. [2021-11-07 00:56:09,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2021-11-07 00:56:09,121 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:09,121 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:09,214 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 00:56:09,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2021-11-07 00:56:09,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:09,549 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:56:09,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:09,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2009659298, now seen corresponding path program 1 times [2021-11-07 00:56:09,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:09,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [777489742] [2021-11-07 00:56:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:09,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:09,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:09,553 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:09,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 00:56:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:13,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:56:13,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 00:56:16,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 00:56:19,380 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:56:19,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [777489742] [2021-11-07 00:56:19,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [777489742] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:19,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2079540481] [2021-11-07 00:56:19,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:19,381 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:56:19,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:56:19,382 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:56:19,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-11-07 00:56:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:25,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:56:25,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:28,166 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 00:56:28,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 00:56:30,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2079540481] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:56:30,636 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920174174] [2021-11-07 00:56:30,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:30,636 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:56:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:56:30,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:56:30,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-07 00:56:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:56:33,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 3577 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:56:33,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:56:34,556 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 00:56:34,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:56:35,276 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2021-11-07 00:56:35,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [920174174] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:56:35,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 00:56:35,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 00:56:35,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383188892] [2021-11-07 00:56:35,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:56:35,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:56:35,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:56:35,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:56:35,281 INFO L87 Difference]: Start difference. First operand 37062 states and 46052 transitions. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:57,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:56:57,103 INFO L93 Difference]: Finished difference Result 74672 states and 92731 transitions. [2021-11-07 00:56:57,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:56:57,104 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 358 [2021-11-07 00:56:57,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:56:57,181 INFO L225 Difference]: With dead ends: 74672 [2021-11-07 00:56:57,181 INFO L226 Difference]: Without dead ends: 37678 [2021-11-07 00:56:57,229 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2142 GetRequests, 2134 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:56:57,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37678 states. [2021-11-07 00:56:58,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37678 to 37678. [2021-11-07 00:56:58,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37678 states, 37673 states have (on average 1.239508401242269) internal successors, (46696), 37677 states have internal predecessors, (46696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:58,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37678 states to 37678 states and 46696 transitions. [2021-11-07 00:56:58,773 INFO L78 Accepts]: Start accepts. Automaton has 37678 states and 46696 transitions. Word has length 358 [2021-11-07 00:56:58,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:56:58,774 INFO L470 AbstractCegarLoop]: Abstraction has 37678 states and 46696 transitions. [2021-11-07 00:56:58,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:56:58,774 INFO L276 IsEmpty]: Start isEmpty. Operand 37678 states and 46696 transitions. [2021-11-07 00:56:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 00:56:58,795 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:56:58,795 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:56:58,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2021-11-07 00:56:59,075 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2021-11-07 00:56:59,283 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-11-07 00:56:59,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:56:59,417 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:56:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:56:59,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1015655338, now seen corresponding path program 1 times [2021-11-07 00:56:59,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:56:59,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008035684] [2021-11-07 00:56:59,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:56:59,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:56:59,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:56:59,422 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:56:59,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 00:57:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:04,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 3801 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:04,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:06,929 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 00:57:06,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:09,826 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 00:57:09,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008035684] [2021-11-07 00:57:09,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008035684] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:09,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [685449073] [2021-11-07 00:57:09,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:09,826 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:09,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:09,827 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:09,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-11-07 00:57:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:16,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 3801 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:16,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 00:57:19,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:22,496 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-07 00:57:22,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [685449073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:22,496 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642460454] [2021-11-07 00:57:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:22,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:57:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:22,498 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:57:22,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-07 00:57:26,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:26,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 3801 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 00:57:26,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:27,091 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:57:27,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-07 00:57:27,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642460454] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:27,891 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 4 imperfect interpolant sequences. [2021-11-07 00:57:27,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5, 5, 5, 5] total 10 [2021-11-07 00:57:27,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529801114] [2021-11-07 00:57:27,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 00:57:27,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:27,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 00:57:27,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:27,894 INFO L87 Difference]: Start difference. First operand 37678 states and 46696 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:29,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:29,533 INFO L93 Difference]: Finished difference Result 75904 states and 94047 transitions. [2021-11-07 00:57:29,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 00:57:29,534 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-07 00:57:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:29,718 INFO L225 Difference]: With dead ends: 75904 [2021-11-07 00:57:29,718 INFO L226 Difference]: Without dead ends: 38294 [2021-11-07 00:57:29,769 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2286 GetRequests, 2278 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:57:29,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38294 states. [2021-11-07 00:57:31,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38294 to 38294. [2021-11-07 00:57:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38294 states, 38289 states have (on average 1.235655148998407) internal successors, (47312), 38293 states have internal predecessors, (47312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:31,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38294 states to 38294 states and 47312 transitions. [2021-11-07 00:57:31,431 INFO L78 Accepts]: Start accepts. Automaton has 38294 states and 47312 transitions. Word has length 382 [2021-11-07 00:57:31,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:31,432 INFO L470 AbstractCegarLoop]: Abstraction has 38294 states and 47312 transitions. [2021-11-07 00:57:31,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 4 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:57:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 38294 states and 47312 transitions. [2021-11-07 00:57:31,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2021-11-07 00:57:31,450 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:31,451 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:31,516 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-11-07 00:57:31,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:31,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:32,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:32,061 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:57:32,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:32,061 INFO L85 PathProgramCache]: Analyzing trace with hash -508761562, now seen corresponding path program 1 times [2021-11-07 00:57:32,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:32,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254269969] [2021-11-07 00:57:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:32,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:32,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:32,065 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:32,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 00:57:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:37,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 4197 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:37,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:40,681 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:57:40,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:44,226 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:57:44,226 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:44,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254269969] [2021-11-07 00:57:44,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254269969] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:44,226 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [677686722] [2021-11-07 00:57:44,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:44,227 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:44,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 00:57:44,228 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 00:57:44,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2021-11-07 00:57:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:52,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 4197 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 00:57:52,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:55,558 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:57:55,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:58,623 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:57:58,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [677686722] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:57:58,624 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308219819] [2021-11-07 00:57:58,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:58,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 00:57:58,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:58,626 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 00:57:58,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-11-07 00:58:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:58:03,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 4197 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:58:03,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:58:06,346 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:58:06,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:09,870 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-11-07 00:58:09,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308219819] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 00:58:09,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-07 00:58:09,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 10 [2021-11-07 00:58:09,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041833419] [2021-11-07 00:58:09,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 00:58:09,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:09,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 00:58:09,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-07 00:58:09,874 INFO L87 Difference]: Start difference. First operand 38294 states and 47312 transitions. Second operand has 10 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:14,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:58:14,883 INFO L93 Difference]: Finished difference Result 76594 states and 94681 transitions. [2021-11-07 00:58:14,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 00:58:14,884 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 422 [2021-11-07 00:58:14,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:58:14,935 INFO L225 Difference]: With dead ends: 76594 [2021-11-07 00:58:14,935 INFO L226 Difference]: Without dead ends: 38346 [2021-11-07 00:58:14,974 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2529 GetRequests, 2518 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-11-07 00:58:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38346 states. [2021-11-07 00:58:17,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38346 to 38346. [2021-11-07 00:58:17,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38346 states, 38341 states have (on average 1.2354659502882033) internal successors, (47369), 38345 states have internal predecessors, (47369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:17,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38346 states to 38346 states and 47369 transitions. [2021-11-07 00:58:17,305 INFO L78 Accepts]: Start accepts. Automaton has 38346 states and 47369 transitions. Word has length 422 [2021-11-07 00:58:17,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:58:17,305 INFO L470 AbstractCegarLoop]: Abstraction has 38346 states and 47369 transitions. [2021-11-07 00:58:17,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 37.2) internal successors, (372), 10 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 00:58:17,305 INFO L276 IsEmpty]: Start isEmpty. Operand 38346 states and 47369 transitions. [2021-11-07 00:58:17,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2021-11-07 00:58:17,317 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:58:17,317 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:58:17,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:17,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2021-11-07 00:58:17,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2021-11-07 00:58:17,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt [2021-11-07 00:58:17,933 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 00:58:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:58:17,933 INFO L85 PathProgramCache]: Analyzing trace with hash 2130237478, now seen corresponding path program 2 times [2021-11-07 00:58:17,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:58:17,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718857574] [2021-11-07 00:58:17,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 00:58:17,937 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:58:17,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:58:17,938 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:58:17,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12a139f5-a849-47a5-9eb2-fc22159dfd89/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-07 01:03:55,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 01:03:55,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 01:03:57,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 3217 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-07 01:03:57,500 INFO L286 TraceCheckSpWp]: Computing forward predicates...